Question

What mistake?

Answer 1

Soybean meal is 16 percent. Cornmeal is 18 percent

Answer 2

http://assets.openstudy.com/updates/attachments/4e51be3e0b8b958804b1d6e1-saifoo.khan-1313980748122-screenshot.jpg

Answer 3

How many lbs of each should be mixed together to get 320 lb mixture that makes 15 % protein?

Answer 4

put x = amount of soybean it contributes 16% of the protein or .16x

Answer 5

the amount of cornmeal is 320 - x (since the total is 320) and it contributes .18(320-x)

Answer 6

wait a minute

Answer 7

you can't add something that is 16% protein to something that is 18% protein and end up with something that is 15% protein!

Answer 8

you told me it was 8%

Answer 9

dang it, you guys got me confused.

Answer 10

i read this
Soybean meal is 16 percent. Cornmeal is 18 percent

Answer 11

that is for sure. the problem is not right. post again and i bet it will be doable

Answer 12

i showed you how to set it up in your other post

Answer 13

like adding 100 proof liquor to 86 proof liquor and ending up with 60 proof liquor

Answer 14

repost and it will be fine i am sure. we can do it slowly, step by step. especially since dumbcow did it already

Answer 15

Soybean meal is 16%. Cornmeal is 18%. How many lbs of each should be mixed together to get 320 lb mixture that is 15% protein????

Answer 16

How many lbs of cornmeal should be in the mixture?

Answer 17

How many lbs of the soybean mean should be in the mixture?

Answer 18

look at other post

Answer 19

hold the phone. you cannot solve this!

Answer 20

maybe it is not clear why, or is it?

Answer 21

if you use all soybeans it will be 16% protein and if you use all cornmeal it will be 18% cornmeal and if you mix them up it will be some percent between 16% and 18% and will NEVER be 15%

Answer 22

16% soybean.....8% cornmeal what makes 320 mixure of 15% protien?

Answer 23

8%! not 18%
now we can do it!!!!!!!

Answer 24

ready?

Answer 25

Sateliteeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

http://assets.openstudy.com/updates/attachments/4e50c9260b8b958804ac86c4-saifoo.khan-1313917428272-ubantu.jpg

Answer 26

WHooHoo

Answer 27

ok lets go slow shall we?

Answer 28

okay

Answer 29

so you can do another one if (god forbid) you have to. it is really not so hard

Answer 30

who you?

Answer 31

introduce a variable as the amount of soybeans, say x = amount of soybeans

Answer 32

soofai...let's go to the othe room

Answer 33

now the total is 320 pound so if you have x pounds of soy beans you have
320- x pounds of cornmeal. clear?

Answer 34

right

Answer 35

bunny, im working on something just in 10mins. =)

Answer 36

my turn now!

Answer 37

I hear ya.

Answer 38

ok now soybeans are 16% protein, so they contribute .16x of the protein.
cornmeal is 8% protein so it contributes .08(320-x) of the protein

Answer 39

Sateliteeeeeeeeeeeeeeeeeeeeeeeee? :(
Just give me the answerrrrrrrrrrrrrr...
Please..

Answer 40

the total amount you get is
\[.16x+.08(320-x)\]

Answer 41

saifoooooooooooooooooooo (be quiet)

Answer 42

I am doing my final tonight.

Answer 43

and you want that to total 15% of 320 which is
\[.15\times 320=48\]

Answer 44

------------------------QUIET------------------

-----------------------TOTALLY-----------------

Answer 45

so you have to solve
\[.16x+.08(320-x)=48\] for x

Answer 46

to make your life easier solve
\[16x+8(320-x)=4800\]

Answer 47

no more stupid decimals.

Answer 48

Saifoo....I am doing my final tonight.......

Answer 49

bunny, I will help u on it.. xD

Answer 50

to make your life really really easy use \ http://www.wolframalpha.com/input/?i=16x%2B8%28320-x%29%3D4800
and see that x = 280

Answer 51

so answer is
280 pounds of soybeans and 320-280=40 pounds of cornmeal

Answer 52

280 soybean
40 cornmeal
halas

Answer 53

can i speak now?

Answer 54

but of course. i thought dumbunny would have to do another one and needed the method

Answer 55

I would hope now

Answer 56

but if this is all, then just answers are fine

Answer 57

hope "not" right?

Answer 58

I appecite your help satellite.

Answer 59

no problem.
on line final?

Answer 60

http://assets.openstudy.com/updates/attachments/4e50c9260b8b958804ac86c4-saifoo.khan-1313917428272-ubantu.jpg

Answer 61

Yes

Answer 62

But my major bud is Saifoo.